A month ago, Dinah’s vocabulary consisted of:
Hi
Dada
Who-who (owl noise)
Uh-oh

Three weeks ago, she finally added in:
Mama

Just this past week she has added:
Bye
Wa-wa (water, combined with the sign for water)
La-la-la (singing)
Up
Down
Light
Papa
Yeah
No
More
Ball
and numerous attempts at other words, including Eleanor and Dinah. Also signing new things, like “music” and “play.”

I think it’s safe to say her language switch has been flipped to “on.”